#ifndef ADVANCEDPROTECTION_H
#define ADVANCEDPROTECTION_H

#include <QObject>
#include <QTimer>
#include <QRandomGenerator>
#include <QCryptographicHash>
#include <QElapsedTimer>
#include <QJsonObject>
#include <vector>
#include <functional>

// 高级防护系统 - 多层陷阱和动态验证
class AdvancedProtection : public QObject
{
    Q_OBJECT

public:
    static AdvancedProtection& instance();

    // 初始化保护系统
    void initializeProtection();

    // 多层验证系统
    struct ValidationResult {
        bool isValid;
        int trustLevel;        // 0-100 信任度
        QByteArray signature;  // 动态签名
        qint64 timestamp;      // 时间戳
        QString sessionId;     // 会话ID
    };

    // 核心验证函数 - 替代简单的isEmpty()检查
    ValidationResult validateLicense();

    // 动态水印验证 - 多种算法随机选择
    bool shouldAddWatermark();
    QString generateDynamicWatermark();

    // 运行时完整性检查
    bool verifyRuntimeIntegrity();

    // 硬件指纹验证
    bool validateHardwareBinding();

    // 时间炸弹机制
    bool checkTimeConstraints();

    // 反调试陷阱
    bool detectDebuggingAttempts();

private:
    AdvancedProtection(QObject *parent = nullptr);
    ~AdvancedProtection();

    static AdvancedProtection* s_instance;
    QTimer* m_protectionTimer;
    QTimer* m_integrityTimer;

    // 多层验证状态
    struct ProtectionState {
        bool isInitialized = false;
        int failureCount = 0;
        qint64 lastCheckTime = 0;
        QByteArray sessionKey;
        std::vector<QByteArray> checksums;
        bool isUnderAttack = false;
    };
    ProtectionState m_state;

    // 动态验证算法
    using ValidationFunc = std::function<bool()>;
    std::vector<ValidationFunc> m_validators;

    // 混淆验证逻辑
    bool performCryptoValidation();
    bool performNetworkValidation();
    bool performMemoryValidation();
    bool performFileSystemValidation();

    // 陷阱机制
    void setupTraps();
    void triggerTrap(const QString& reason);

    // 动态密钥生成
    QByteArray generateSessionKey();
    QByteArray calculateDynamicChecksum();

    // 环境检测
    bool isRunningInSuspiciousEnvironment();
    bool detectVirtualMachine();
    bool detectSandbox();

    // 时间验证
    bool validateTimeIntegrity();
    qint64 getSecureTimestamp();

    // 内存保护
    void protectCriticalMemory();
    void clearSensitiveData();

private slots:
    void performPeriodicCheck();
    void performIntegrityCheck();

signals:
    void protectionTriggered(const QString& reason);
    void integrityViolation(const QString& details);
    void suspiciousActivity(const QString& activity);
};

// 高级宏系统 - 替代简单的判断
#define ADVANCED_LICENSE_CHECK() AdvancedProtection::instance().validateLicense().isValid
#define DYNAMIC_WATERMARK_CHECK() AdvancedProtection::instance().shouldAddWatermark()
#define SECURE_OPERATION(op) \
    do { \
        if (!AdvancedProtection::instance().verifyRuntimeIntegrity()) { \
            return false; \
        } \
        op; \
    } while(0)

// 代码混淆宏 - 让逆向更困难
#define OBFUSCATED_BOOL(val) \
    (QRandomGenerator::global()->bounded(2) == 0 ? \
    !(!(val)) : (val))

#define OBFUSCATED_CHECK(condition, success, failure) \
    do { \
        volatile bool _temp = condition; \
        for(int _i = 0; _i < QRandomGenerator::global()->bounded(3, 7); ++_i) { \
            _temp = _temp && (QRandomGenerator::global()->bounded(10) < 8); \
        } \
        if(_temp) { success; } else { failure; } \
    } while(0)

#endif // ADVANCEDPROTECTION_H